fix:Do not repeatedly delete requests to the server (#4622)

frontend/src/components/dialog/delete-repo-dialog.js

@@ -12,16 +12,26 @@ const propTypes = {
 
 class DeleteRepoDialog extends Component {
 
+  constructor(props) {
+    super(props);
+    this.state = {
+      isRequestSended: false,
+    };
+  }
+
   toggle = () => {
     this.props.toggle();
   }
 
   onDeleteRepo = () => {
+    this.setState({isRequestSended: true}, () => {
       this.props.onDeleteRepo(this.props.repo);
+    });
   }
 
   render() {
 
+    const { isRequestSended } = this.state;
     const repo = this.props.repo;
     const repoName = '<span class="op-target">' + Utils.HTMLescape(repo.repo_name || repo.name) + '</span>';
     let message = gettext('Are you sure you want to delete %s ?');
@@ -35,7 +45,7 @@ class DeleteRepoDialog extends Component {
         </ModalBody>
         <ModalFooter>
           <Button color="secondary" onClick={this.toggle}>{gettext('Cancel')}</Button>
-          <Button color="primary" onClick={this.onDeleteRepo}>{gettext('Delete')}</Button>
+          <Button color="primary" disabled={isRequestSended} onClick={this.onDeleteRepo}>{gettext('Delete')}</Button>
         </ModalFooter>
       </Modal>
     );